Community Water System · PWS SD4602295
Cedar Gulch 2
Operator location Piedmont, South Dakota - 65% of 414 violations are health-based (upper-third health share (> 23%)); groundwater source; 40 served per SDWIS.
- 40
- People served (this PWS)
- 414
- EPA violations (this PWS)
- 269
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Cedar Gulch 2 standing, high SDWIS violation third
65% of 414 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 65% is upper-third health share (> 23%).
The verdict
Cedar Gulch 2 sits in the upper third of the sitemap cohort by violation count (414), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (40; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 65% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 414
- Total EPA violations on record
- 65%
- Health-based (MCL / treatment failure)
- 40
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 16
- County
- Pennington
- School/Daycare
- No
- MCL Violations
- 246
- Monitoring Violations
- 137
- Treatment Tech Violations
- 23
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 120 | 2018 |
| Gross Alpha, Excl. Radon and U | MCL | 114 | 2018 |
| Groundwater Rule | TT | 18 | 2012 |
| Coliform (TCR) | MCL | 12 | 2010 |
| Public Notice | Other | 6 | 2014 |
| Chlorine | MR | 6 | 2016 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 5 | 2015 |
| Heptachlor epoxide | MR | 4 | 2017 |
| Total Polychlorinated Biphenyls (PCB) | MR | 4 | 2017 |
| Di(2-ethylhexyl) adipate | MR | 4 | 2017 |
| Di(2-ethylhexyl) phthalate | MR | 4 | 2017 |
| HEXACHLOROBENZENE | MR | 4 | 2017 |
| Chlordane | MR | 4 | 2017 |
| Carbofuran | MR | 4 | 2017 |
| OXAMYL | MR | 4 | 2017 |
| Dalapon | MR | 4 | 2017 |
| Pentachlorophenol | MR | 4 | 2017 |
| Picloram | MR | 4 | 2017 |
| ETHYLENE DIBROMIDE | MR | 4 | 2017 |
| Endothall | MR | 4 | 2017 |
| Glyphosate | MR | 4 | 2017 |
| Diquat | MR | 4 | 2017 |
| LASSO | MR | 4 | 2017 |
| Heptachlor | MR | 4 | 2017 |
| Atrazine | MR | 4 | 2017 |
| Methoxychlor | MR | 4 | 2017 |
| Endrin | MR | 4 | 2017 |
| BHC-GAMMA | MR | 4 | 2017 |
| Dinoseb | MR | 4 | 2017 |
| 2,4-D | MR | 4 | 2017 |
Violation Count vs. the National Corpus
Cedar Gulch 2 has 414 recorded EPA violations, 94% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 6% carry more. 65% of this system's own violations are health-based (269 of 414), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
414 Higher than most more violations than 94% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on Cedar Gulch 2
269 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for SD4602295.
Sources: EPA SDWIS
Nationwide peers
414 violations · 40 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Cedar Gulch 2
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in South Dakota compares on the same EPA violation measures. South Dakota systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.